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| 1 | 2010-2015年全球实验室网络支持的消除麻疹和风疹工作的进展显示文摘2012年,世界卫生大会(World Health Assembly)签署全球疫苗行动计划(Global Vaccine Action Plan,GVAP),该计划旨在2020年前消除世界卫生组织(World Health Qrganization,WHO)5个区域的麻疹和风疹。2013年9月,WHO 6个区域的所有国家都已确立消除麻疹的目标,其中3个区域还确立了消除风疹和先天性风疹综合征的目标. | mick n.mulders paul a.rota joseph p.icenogle kevin e.brown makoto takeda gloria j.rey myriam c.ben mamou annick r.g.a.dosseh charles r.byabamazima hinda j.ahmed sirima pattamadilok yan zhang marta gacic-dobo peter m.strebel james l.goodson 周惠嘉(翻译) | 2018 | 上海预防医学2018，30，2： | 4 |
| 2 | Color Degradation Kinetics of Spinach, Mustard Leaves, and Mixed Puree显示文摘 | J.Ahmed A.Kaur U.Shivhare | 2006 | Journal of Food Science2006，，3： | 1 |
| 3 | Non-axisymmetric Homann stagnation-point flow of Walter’s B nanofluid over a cylindrical disk显示文摘The study of non-axisymmetric Homann stagnation-point flow of Walter’s B nanofluid along with magnetohydrodynamic(MHD) and non-linear Rosseland thermal radiation over a cylindrical disk in the existence of the time-independent free stream is considered. Moreover, the notable impacts of thermophoresis and Brownian motion are analyzed by Buongiorno’s model. The momentum, energy, and concentration equations are converted into the dimensionless coupled ordinary differential equations via similarity transformations, which are later numerically solved by altering the values of the pertinent parameters. The numerical and asymptotic solutions for the large shear-to-strain rate ratio γ =a/bfor the parameters of the displacement thicknesses and the wall-shear stress are computed by perturbative expansion and analyzed. Furthermore, the technique bvp4c in MATLAB is deployed as an efficient method to analyze the calculations for the non-dimensional velocities, temperature, displacement thickness, and concentration profiles. It is observed that the two-dimensional displacement thickness parameters α andβ are reduced due to the viscoelasticity and magnetic field effects. Moreover, when the shear-to-strain rate ratio approaches infinity, α is closer to its asymptotic value, while βand the three-dimensional displacement thickness parameter δ1 show the opposite trend.The outcomes of the viscoelasticity and the magnetic field on the skin friction are also determined. It is concluded that ■ reaches its asymptotic behavior when the shearto-strain rate ratio approaches infinity. Meanwhile, ■ shows different results. | M.KHAN M.SARFRAZ J.AHMED L.AHMAD C.FETECAU | 2020 | Applied Mathematics and Mechanics(English Edition)2020，41，5： | 1 |
| 4 | Chemically reactive and radiative von Kármán swirling flow due to a rotating disk显示文摘A new mathematical model is presented to study the heat and mass transfer characteristics of magnetohydrodynamic(MHD) Maxwell fluid flow over a convectively heated stretchable rotating disk. To regulate the fluid temperature at the surface, a simple isothermal model of homogeneous-heterogeneous reactions is employed. The impact of nonlinear thermal radiative heat flux on thermal transport features is studied. The transformed nonlinear system of ordinary differential equations is solved numerically with an efficient method, namely, the Runge-Kutta-Felberg fourth-order and fifth-order(RKF45)integration scheme using the MAPLE software. Achieved results are validated with previous studies in an excellent way. Major outcomes reveal that the magnetic flux reduces the velocity components in the radial, angular, and axial directions, and enhances the fluid temperature. Also, the presence of radiative heat flux is to raise the temperature of fluid. Further, the strength of homogeneous-heterogeneous reactions is useful to diminish the concentration of reaction. | M.KHAN J.AHMED L.AHMAD | 2018 | Applied Mathematics and Mechanics(English Edition)2018，39，9： | 1 |
| 5 | D‐dimer concentration increases with age reducing the clinical value of the D‐dimer assay in the elderly显示文摘 | P. LHarper E.Theakston J.Ahmed P.Ockelford | 2007 | Internal Medicine Journal2007，，9： | 1 |
| 6 | D‐dimer concentration increases with age reducing the clinical value of the D‐dimer assay in the elderly显示文摘 | P. LHarper E.Theakston J.Ahmed P.Ockelford | 2007 | Internal Medicine Journal2007，，9： | 1 |
| 7 | Rotational flow of Oldroyd-B nanofluid subject to Cattaneo-Christov double diffusion theory显示文摘A nanofluid is composed of a base fluid component and nanoparticles, in which the nanoparticles are dispersed in the base fluid. The addition of nanoparticles into a base fluid can remarkably improve the thermal conductivity of the nanofluid, and such an increment of thermal conductivity can play an important role in improving the heat transfer rate of the base fluid. Further, the dynamics of non-Newtonian fluids along with nanoparticles is quite interesting with numerous industrial applications. The present predominately predictive modeling studies the flow of the viscoelastic Oldroyd-B fluid over a rotating disk in the presence of nanoparticles. A progressive amendment in the heat and concentration equations is made by exploiting the Cattaneo-Christov heat and mass flux expressions. The characteristic of the Lorentz force due to the magnetic field applied normal to the disk is studied. The Buongiorno model together with the Cattaneo-Christov theory is implemented in the Oldroyd-B nanofluid flow to investigate the heat and mass transport mechanism. This theory predicts the characteristics of the fluid thermal and solutal relaxation time on the boundary layer flow. The von K′arm′an similarity functions are utilized to convert the partial differential equations(PDEs) into ordinary differential equations(ODEs). A homotopic approach for obtaining the analytical solutions to the governing nonlinear problem is carried out. The graphical results are obtained for the velocity field, temperature, and concentration distributions. Comparisons are made for a limiting case between the numerical and analytical solutions, and the results are found in good agreement. The results reveal that the thermal and solutal relaxation time parameters diminish the temperature and concentration distributions, respectively. The axial flow decreases in the downward direction for higher values of the retardation time parameter. The impact of the thermophoresis parameter boosts the temperature distribution. | A.HAFEEZ M.KHAN A.AHMED J.AHMED | 2020 | Applied Mathematics and Mechanics(English Edition)2020，41，7： | 1 |
| 8 | Thermal analysis in swirl motion of Maxwell nanofluid over a rotating circular cylinder显示文摘In this paper,the mechanism of thermal energy transport in swirling flow of the Maxwell nanofluid induced by a stretchable rotating cylinder is studied.The rotation of the cylinder is kept constant in order to avoid the induced axially secondary flow.Further,the novel features of heat generation/absorption,thermal radiation,and Joule heating are studied to control the rate of heat transfer.The effects of Brownian and thermophoretic forces exerted by the Maxwell nanofluid to the transport of thermal energy are investigated by utilizing an effective model for the nanofluid proposed by Buongiorno.The whole physical problem of fluid flow and thermal energy transport is modelled in the form of partial differential equations(PDEs)and transformed into nonlinear ordinary differential equations(ODEs)with the help of the suitable flow ansatz.Numerically acquired results through the technique bvp4c are reported graphically with physical explanation.Graphical analysis reveals that there is higher transport of heat energy in the Maxwell nanoliquid for a constant wall temperature(CWT)as compared with the prescribed surface temperature(PST).Both thermophoretic and Brownian forces enhance the thermal energy transport in the flowing Maxwell nanofluid.Moreover,the temperature distribution increases with increasing values of the radiation parameter and the Eckert number.It is also noted that an increase in Reynolds number reduces the penetration depth,and as a result the flow and transport of energy occur only near the surface of the cylinder. | A.AHMED M.KHAN J.AHMED | 2020 | Applied Mathematics and Mechanics(English Edition)2020，41，9： | 0 |
| 9 | Transient flow of magnetized Maxwell nanofluid: Buongiorno model perspective of Cattaneo-Christov theory显示文摘The present research article is devoted to studying the characteristics of Cattaneo-Christov heat and mass fluxes in the Maxwell nanofluid flow caused by a stretching sheet with the magnetic field properties.The Maxwell nanofluid is investigated with the impact of the Lorentz force to examine the consequence of a magnetic field on the flow characteristics and the transport of energy.The heat and mass transport mechanisms in the current physical model are analyzed with the modified versions of Fourier’s and Fick’s laws,respectively.Additionally,the well-known Buongiorno model for the nanofluids is first introduced together with the Cattaneo-Christov heat and mass fluxes during the transient motion of the Maxwell fluid.The governing partial differential equations(PDEs)for the flow and energy transport phenomena are obtained by using the Maxwell model and the Cattaneo-Christov theory in addition to the laws of conservation.Appropriate transformations are used to convert the PDEs into a system of nonlinear ordinary differential equations(ODEs).The homotopic solution methodology is applied to the nonlinear differential system for an analytic solution.The results for the time relaxation parameter in the flow,thermal energy,and mass transport equations are discussed graphically.It is noted that higher values of the thermal and solutal relaxation time parameters in the Cattaneo-Christov heat and mass fluxes decline the thermal and concentration fields of the nanofluid.Further,larger values of the thermophoretic force enhance the heat and mass transport in the nanoliquid.Moreover,the Brownian motion of the nanoparticles declines the concentration field and increases the temperature field.The validation of the results is assured with the help of numerical tabular data for the surface velocity gradient. | M.KHAN A.AHMED J.AHMED | 2020 | Applied Mathematics and Mechanics(English Edition)2020，41，4： | 0 |
| 10 | Boundary layer flow of Maxwell fluid due to torsional motion of cylinder: modeling and simulation显示文摘This paper investigates the boundary layer flow of the Maxwell fluid around a stretchable horizontal rotating cylinder under the influence of a transverse magnetic field.The constitutive flow equations for the current physical problem are modeled and analyzed for the first time in the literature.The torsional motion of the cylinder is considered with the constant azimuthal velocity E.The partial differential equations(PDEs)governing the torsional motion of the Maxwell fluid together with energy transport are simplified with the boundary layer concept.The current analysis is valid only for a certain range of the positive Reynolds numbers.However,for very large Reynolds numbers,the flow becomes turbulent.Thus,the governing similarity equations are simplified through suitable transformations for the analysis of the large Reynolds numbers.The numerical simulations for the flow,heat,and mass transport phenomena are carried out in view of the bvp4c scheme in MATLAB.The outcomes reveal that the velocity decays exponentially faster and reduces for higher values of the Reynolds numbers and the flow penetrates shallower into the free stream fluid.It is also noted that the phenomenon of stress relaxation,described by the Deborah number,causes to decline the flow fields and enhance the thermal and solutal energy transport during the fluid motion.The penetration depth decreases for the transport of heat and mass in the fluid with the higher Reynolds numbers.An excellent validation of the numerical results is assured through tabular data with the existing literature. | M.KHAN A.AHMED J.AHMED | 2020 | Applied Mathematics and Mechanics(English Edition)2020，41，4： | 0 |
| 11 | Non-axisymmetric Homann MHD stagnation point flow of Al2O3-Cu/water hybrid nanofluid with shape factor impact显示文摘The heat transfer of Homann flow in the stagnation region of the Al2 O3-Cu/water hybrid nanofluid is investigated by adopting the Tiwari-Das model over a cylindrical disk.The effects of the nanoparticle shape,the viscous dissipation,and the nonlinear radiation are considered.The governing equations are obtained by using similarity transformations,and the numerical outcomes for the flow and the temperature field are noted by bvp4 c on MATLAB.The numerical solutions of the flow field are compared with the asymptotic behaviors of large shear-to-strain-rate ratio.The effects of variations of parameters involved are inspected for both nanofluid and hybrid nanofluid flows,temperature profiles,local Nusselt numbers,and skin frictions.It is concluded that the velocity and temperature fields in the hybrid nanophase function more rapidly than those in the nanofluid phase. | M.KHAN J.AHMED F.SULTANA M.SARFRAZ | 2020 | Applied Mathematics and Mechanics(English Edition)2020，41，8： | 0 |
| 12 | Von Kármán rotating flow of Maxwell nanofluids featuring the Cattaneo-Christov theory with a Buongiorno model显示文摘This research paper analyzes the transport of thermal and solutal energy in the Maxwell nanofluid flow induced above the disk which is rotating with a constant angular velocity.The significant features of thermal and solutal relaxation times of fluids are studied with a Cattaneo-Christov double diffusion theory rather than the classical Fourier’s and Fick’s laws.A novel idea of a Buongiorno nanofluid model together with the Cattaneo-Christov theory is introduced for the first time for the Maxwell fluid flow over a rotating disk.Additionally,the thermal and solutal distributions are controlled with the impacts of heat source and chemical reaction.The classical von Karman similarities are used to acquire the non-linear system of ordinary differential equations(ODEs).The analytical series solution to the governing ODEs is obtained with the well-known homotopy analysis method(HAM).The validation of results is provided with the published results by the comparison tables.The graphically presented outcomes for the physical problem reveal that the higher values of the stretching strength parameter enhance the radial velocity and decline the circumferential velocity.The increasing trend is noted for the axial velocity profile in the downward direction with the higher values of the stretching strength parameter.The higher values of the relaxation time parameters in the Cattaneo-Christov theory decrease the thermal and solutal energy transport in the flow of Maxwell nanoliquids.The higher rate of the heat transport is observed in the case of a larger thermophoretic force. | A.AHMED M.KHAN J.AHMED A.HAFEEZ | 2020 | Applied Mathematics and Mechanics(English Edition)2020，41，8： | 0 |
| 13 | 杜克雷嗜血杆菌与人类树突状细胞和巨噬细胞体外的相互作用显示文摘为探讨抗原呈递细胞 (APCs)在软下疳发病机制中的作用 ,将树突状细胞 (DCs)和巨噬细胞 (MQs)与流感嗜血杆菌、杜克雷嗜血杆菌及其纯化抗原脂寡糖 (LOS)、细胞致死性肿胀毒素 (HdCDT)共育 ,测定它们的吞噬活性及6、2 4h时前炎症细胞因子TNF α、IL 1 β、IL 6、IL 8的分泌情况 ;将抗原作用后的细胞与自体CD4 + T淋巴细胞共育 ,测定T淋巴细胞增生及 48h细胞上清液中的细胞因子IFN γ、IL 4、IL 1 3的水平。结果 :约 6%~ 2 7%的DCs和 1 4%~ 2 6%的MQs吞噬杜克雷嗜血杆菌的不同菌株及无荚膜流感嗜血杆菌、大肠杆菌。杜克雷菌的不同菌株诱导DCs、MQs分泌大量的TNF α、IL 6、IL 8(P <0 .0 5 ) ;LOS诱导的前炎症细胞因子水平比细菌低 5 0 %~ 67% ;HdCDT不诱导任何前炎症细胞因子的产生。 2种细菌作用后的DCs、MQs能激活T淋巴细胞产生高水平IFN γ ,并诱导产生相似的T淋巴细胞增生 ,HdCDT无此作用。提示 :杜克雷菌能影响APCs活化T细胞的能力 ,并有助于Th1型反应。 | 徐婷婷 Hinda J.Ahmed Kristina Eriksson Karin Ahlman 杨永弘 Teresa Lagergard | 2004 | 首都医科大学学报2004，25，2： | 0 |
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